b) data collected during field campaigns organized within the project
Several dedicated field campaigns have been organized by project partners to collect in-situ information from 2017 within selected pilot countries.

c) data provided through interviews with farmers
Interview with cooperating farmers are carried out to get the information about grassland management within 2017 (focusing especially on grassland mowing dates).

d) data available from JECAM sites and LUCAS surveys
Existing datasets were evaluated to identify data that may support benchmarking and validation of algorithms & methods for calculation of vegetation status indicators (e.g. field measurements of biophysical variables, such us LAI, LAIeff, FAPAR or FCOVER, are available on some JECAM sites).

e) data collected through visual interpretation of satellite & aerial imagery
CAPI (Computer-Assisted Photo-Interpretation) may be applied to generate reference datasets for information that is not available from other sources (e.g. identification of crop harvest on time series of Sentinel-2 imagery).

Additional auxiliary datasets have been also collected to support the project activities: